Georges Cuvier, a pioneer in paleontology, observed the presence or absence of species 1. in the fossil record.

2. and concluded that evolution was responsible.

3. in sedimentary strata of different ages.

4. A and C only.

5. A, B and C.

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u.s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u.s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u.s.